Integrated Knife Edges in Perforated Discs for Meat Comminution
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Solution Overview
Problem
Multi-part cutting sets in meat grinders face challenges in achieving efficient comminution of inhomogeneous meat materials due to their internal strength and resilience, leading to high external forces and maintenance needs, despite the use of stationary perforated discs and rotating knives.
Innovation Solution
Integration of knife edges within the flow openings of pre-cutter or perforated discs to disrupt the internal tension system of the raw material, enhancing material deformability and reducing resistance for faster penetration, combined with a design that includes a feed zone for material compression and a knife zone with straight or twisted knife edges for deep cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-part cutting sets with multiple cutting elements are used to achieve efficient comminution of meat, then the productivity and quality of end product are improved, but the device complexity and maintenance effort increase considerably
Solution Approach 1:
The patent combines multiple cutting functions into a single integrated pre-cutter or perforated disc by incorporating multiple knife edges directly into the disc structure. This merging of cutting elements into one component achieves efficient comminution while reducing device complexity and maintenance requirements compared to using multiple separate cutting elements
Solution Approach 2:
The pre-cutter or perforated disc serves multiple functions simultaneously: it acts as both a cutting element with integrated knife edges and a perforated disc for material conveyance and size control. This multi-functionality improves productivity by eliminating the need for separate cutting tools while maintaining effective comminution performance
2Device complexity
If the number of cutting elements is reduced to simplify the cutting set, then the device complexity and maintenance effort are reduced, but the productivity and effectiveness of the cutting system decrease
Solution Approach 1:
By integrating multiple knife edges into a single pre-cutter or perforated disc, the patent maintains the cutting effectiveness of multiple elements while simplifying the overall device structure. The combined design achieves the same comminution efficiency as multiple separate elements but with reduced complexity and maintenance needs
3Productivity
If additional cutting elements are added to increase performance, then the productivity is improved, but the maintenance effort and device complexity increase correspondingly
Solution Approach 1:
The patent merges multiple cutting functions into one integrated pre-cutter or perforated disc, maintaining high cutting system performance while reducing the number of replaceable parts. This single integrated component requires less maintenance effort compared to multiple separate cutting elements that would need individual maintenance and replacement
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly increases the cutting system's performance, allowing for efficient comminution similar to using two additional cutting elements, with a 30% reduction in meat volume through material compression and deep, all-sided cutting, resulting in a high flow rate and low resistance during processing.
Implementation Method 1
the knife edges integrated into the flow openings of pre-cutter or perforated disc, and the stability of the form resistance of the raw material is reduced or eliminated
Implementation Method 2
a feed or compression zone with a cross-sectional area that decreases in the raw material conveying direction
Data Source
Figure 1~3
AI summary
The system has passage openings (1) exhibiting a feeding zone (2) for a raw material at an inlet side. The openings are provided with knife zones (4), at which a knife cut (3) that runs in a conveying direction is produced. The feeding zone is designed in a conical and deeper manner. The knife cut is provided with a hard surface coating, where a passage length of the knife zones is larger around a factor three in relation to the feeding zone. The knife cut is integrated in a contour form of a tool base body.